/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.kie.kogito.examples.hr;

import java.util.HashSet;
import java.util.Set;

public class EmployeeRepository {

    private static EmployeeRepository INSTANCE = new EmployeeRepository();

    private Set<String> registered = new HashSet<>();

    public static EmployeeRepository get() {
        return INSTANCE;
    }

    /**
     * @return true if the employee is already registered
     */
    public boolean isRegistered(String personalId) {
        return registered.contains(personalId);
    }

    /**
     * @return false if the employee is already registered
     */
    public boolean isNotRegistered(String personalId) {
        return !isRegistered(personalId);
    }

    /**
     * @return true if the employee is already registered
     */
    public void register(Employee emp) {
        if (!isRegistered(emp.getPersonalId())) {
            registered.add(emp.getPersonalId());
        }
    }
}
